No doubt about it, Alphonse's Lakeline metal follower for Kahr 9mm magazines works like a charm, but I'm usually pleased when I can acquire one of the "MK" marked magazines with the old folded steel follower. I just received this one from an Ebay auction and it looks as if it might never have been used

I've yet to have an issue with these mags in my MK9.
Regards,
Greg